Introduction to Big Cousin
Big Cousin is a decentralized equity-backed money market. It compresses four traditional financial primitives — brokerage, dividend custody, prime brokerage margin, and money-market lending — into a single on-chain protocol on the BNB Smart Chain.
The problem
The average retail investor holds fragmented, illiquid capital. Their equity sits in a brokerage account earning dividends taxed at ordinary income; their cash sits in a savings account earning below CPI; and any margin they access is priced at broker-defined spreads with limited transparency. Meanwhile, DeFi has produced deep stablecoin markets but no native way to collateralize genuine, dividend-producing US equity risk.
Big Cousin closes that gap. A single deposit gives the user (a) equity exposure, (b) on-chain dividend cash flow, (c) a productive collateral asset, and (d) a native governance and fee-capture token.
Core primitives
Deposit USDC, mint NAV-priced shares
Custodian cash routed on-chain
Boosts yield, unlocks fee share
Streamed in USDC to lockers
End-to-end user journey
The canonical Big Cousin position combines all four modules. A user deposits 10,000 USDC, purchases a basket, and locks it for 24 months. The numbers below are illustrative but derived directly from live protocol parameters.
| Step | Action | Balance | Effect |
|---|---|---|---|
| 1 | Deposit USDC → mint basket BCF-SP7 | 10,000.00 | Buy 10k of top-7 S&P basket |
| 2 | Auto-stream dividends (est.) | +165.00 / yr | 1.65% avg dividend yield |
| 3 | Lock basket for 24 months → veBCF boost 1.75× | 17,500 投票权 | Boosted CF: 60% → 72% |
| 4 | Locker fee share (70% of protocol revenue) | +35.00 / yr | Paid in USDC monthly |
| 5 | $BCF emissions (boosted) | +412 BCF / yr | Vests over 90 days |
Why the BNB Smart Chain
The BNB Smart Chain is an EVM-equivalent L2 with sub-100ms blocks, deterministic ordering, and a native KYC oracle used by regulated market makers. Big Cousin inherits three properties that matter for a securities protocol:
- Sub-cent settlement — dividend distributions of a few dollars are economically viable per user.
- MEV-resistant sequencing — basket rebalances quote at NAV, not at a sandwich-attackable spread.
- On-chain identity — the KYC oracle gates access to regulated basket tranches without exposing PII.
Design principles
- Every rate is a formula, not a policy. Boost multipliers, fee splits, dividend routing — all derived from published curves. No off-chain committee.
- Capital must be productive. Idle positions are capital destruction. Locked baskets keep earning dividends and emissions.
- Fees flow to lockers. 70% of protocol revenue is returned to veBCF holders, 20% to the insurance module, 10% to treasury.